Examine source code of Link Disabler

{
  "manifest_version": 3,
  "name": "Link Disabler",
  "version": "1.0",
  "browser_specific_settings": {
    "gecko": {
      "id": "{0f6e2362-c0a8-4bb8-b85c-0e969f779bfd}"
    }
  },
  "description": "Disable any link you don't want to open or visit again.",
  "permissions": [
    "contextMenus",
    "storage",
    "scripting"
  ],
  "background": {
    "service_worker": "background.js",
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ],
      "all_frames": true
    }
  ],
  "icons": {
    "16": "icon.png",
    "32": "icon.png",
    "48": "icon.png",
    "128": "icon.png"
  }
}